clearance for exhaust to salon floor before wet ell

[Tony Repetti]

I’m in the middle of a repower with reman 450c cummins engines as replacement for 671tibs in a 1989 41 Viking. I’m trying to get max height as possible using 2 short turn ells comming off of the turbo. This will place the stainless steel ell about 2 inches from the salon under side of the floor before any turbo wrap or insulation.

What would be a safe clearance for the hot ell off the turbo? What is the recommended insulation to use a heat shield . the fiber glass wrap or a turbo blanket.

Years ago you had advised me on a 330 b repower on a 33 Bertram with excellent results.

Also your stainless steel exhaust flange will work great.

Thanks

Tony

Topic

[Rob Schepis]

Any pics of what you are working with? Fiberglass wrap on the dry riser, will be ~valve cover temperature or less.  Here’s my Seaboard risers, without and with the wraps.

[Author]

Replies